﻿<common:LayoutAwarePage
    x:Name="pageRoot"
    x:Class="TopGroup.MySharePoint.GroupedItemsPage"
    DataContext="{Binding DefaultViewModel, RelativeSource={RelativeSource Self}}"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:TopGroup.MySharePoint"  
    xmlns:data="using:TopGroup.MySharePoint.Data"
    xmlns:common="using:TopGroup.MySharePoint.Common"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">


    <Page.Resources>

        <!--
            Collection of grouped items displayed by this page, bound to a subset
            of the complete item list because items in groups cannot be virtualized
        -->
        <CollectionViewSource
            x:Name="groupedItemsViewSource"
            Source="{Binding Groups}"
            IsSourceGrouped="true"
            ItemsPath="TopItems"
            d:Source="{Binding AllGroups, Source={d:DesignInstance Type=data:SampleDataSource, IsDesignTimeCreatable=True}}"/>
    </Page.Resources>

    <!--
        This grid acts as a root panel for the page that defines two rows:
        * Row 0 contains the back button and page title
        * Row 1 contains the rest of the page layout
    -->
    <Grid Style="{StaticResource LayoutRootStyle}">
        <Grid.RowDefinitions>
            <RowDefinition Height="140"/>
            <RowDefinition Height="*"/>
            <!--<RowDefinition Height="60" ></RowDefinition>-->
        </Grid.RowDefinitions>

        <!-- Horizontal scrolling grid used in most view states -->
        <SemanticZoom Grid.Row="1">
            <SemanticZoom.ZoomedInView>
                <!-- Horizontal scrolling grid used in most view states -->
                <GridView
            x:Name="itemGridView"
            AutomationProperties.AutomationId="ItemGridView"
            AutomationProperties.Name="Grouped Items"
            Margin="0,-3,0,0"
            Padding="116,0,40,46"
            ItemsSource="{Binding Source={StaticResource groupedItemsViewSource}}"
            ItemTemplate="{StaticResource Standard250x250ItemTemplate}"
            SelectionMode="None"
            IsItemClickEnabled="True"
            ItemClick="ItemView_ItemClick">

                    <GridView.ItemsPanel>
                        <ItemsPanelTemplate>
                            <VirtualizingStackPanel Orientation="Horizontal"/>
                        </ItemsPanelTemplate>
                    </GridView.ItemsPanel>
                    <GridView.GroupStyle>
                        <GroupStyle>
                            <GroupStyle.HeaderTemplate>
                                <DataTemplate>
                                    <Grid Margin="1,0,0,6">
                                        <Button
                            AutomationProperties.Name="Group Title"
                            Content="{Binding Title}"
                            Click="Header_Click"
                            Style="{StaticResource TextButtonStyle}"/>
                                    </Grid>
                                </DataTemplate>
                            </GroupStyle.HeaderTemplate>
                            <GroupStyle.Panel>
                                <ItemsPanelTemplate>
                                    <VariableSizedWrapGrid Orientation="Vertical" Margin="0,0,80,0"/>
                                </ItemsPanelTemplate>
                            </GroupStyle.Panel>
                        </GroupStyle>
                    </GridView.GroupStyle>
                </GridView>        
            </SemanticZoom.ZoomedInView>
            <SemanticZoom.ZoomedOutView>             
                <GridView x:Name="groupGridView" Margin="116,0,40,46">
                    <GridView.ItemTemplate>
                        <DataTemplate>
                            <Grid Margin="0,0,24,0">
                                <Image Source="{Binding Group.GroupImage}" Width="250" Height="500" Stretch="UniformToFill" />
                                <TextBlock Text="{Binding Group.Title}" Foreground="{StaticResource ListViewItemOverlayForegroundThemeBrush}" Style="{StaticResource TitleTextStyle}" FontSize="28" Margin="12"/>
                                <TextBlock Text="{Binding Group.RecipesCount}" Foreground="{StaticResource ApplicationSecondaryForegroundThemeBrush}" Style="{StaticResource TitleTextStyle}" FontSize="96" Margin="12,64,12,12" HorizontalAlignment="Right"/>
                            </Grid>
                        </DataTemplate>
                    </GridView.ItemTemplate>
                    
                </GridView>
            </SemanticZoom.ZoomedOutView>
        </SemanticZoom>
       

        <!-- Vertical scrolling list only used when snapped -->
        <ListView
            x:Name="itemListView"
            AutomationProperties.AutomationId="ItemListView"
            AutomationProperties.Name="Grouped Items"
            Grid.Row="1"
            Visibility="Collapsed"
            Margin="0,-10,0,0"
            Padding="10,0,0,60"
            ItemsSource="{Binding Source={StaticResource groupedItemsViewSource}}"
            ItemTemplate="{StaticResource Standard80ItemTemplate}"
            SelectionMode="None"
            IsSwipeEnabled="false"
            IsItemClickEnabled="True"
            ItemClick="ItemView_ItemClick">

            <ListView.GroupStyle>
                <GroupStyle>
                    <GroupStyle.HeaderTemplate>
                        <DataTemplate>
                            <Grid Margin="7,7,0,0">
                                <Button
                                    AutomationProperties.Name="Group Title"
                                    Click="Header_Click"
                                    Style="{StaticResource TextPrimaryButtonStyle}">
                                    <StackPanel Orientation="Horizontal">
                                        <TextBlock Text="{Binding Title}" Margin="3,-7,10,10" Style="{StaticResource GroupHeaderTextStyle}" />
                                        <TextBlock Text="{StaticResource ChevronGlyph}" FontFamily="Segoe UI Symbol" Margin="0,-7,0,10" Style="{StaticResource GroupHeaderTextStyle}"/>
                                    </StackPanel>
                                </Button>
                            </Grid>
                        </DataTemplate>
                    </GroupStyle.HeaderTemplate>
                </GroupStyle>
            </ListView.GroupStyle>
        </ListView>

        <!-- Back button and page title -->
        <Grid>
            
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="Auto" />
            </Grid.ColumnDefinitions>
            
            <Button x:Name="backButton" Click="GoBack" IsEnabled="{Binding Frame.CanGoBack, ElementName=pageRoot}" Style="{StaticResource BackButtonStyle}"/>
            <TextBlock x:Name="pageTitle" Text="{StaticResource AppName}" Grid.Column="1" IsHitTestVisible="false" Style="{StaticResource PageHeaderTextStyle}"/>
            <ProgressRing x:Name="ProgressRing" Grid.Column="2" Margin="10,40,10,10" Foreground="White" IsActive="True" Width="16" Height="16"></ProgressRing>
        </Grid>
        
        <Grid HorizontalAlignment="Right" Margin="10,35,10,0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
        </Grid>

        <VisualStateManager.VisualStateGroups>

            <!-- Visual states reflect the application's view state -->
            <VisualStateGroup x:Name="ApplicationViewStates">
                <VisualState x:Name="FullScreenLandscape"/>
                <VisualState x:Name="Filled"/>

                <!-- The entire page respects the narrower 100-pixel margin convention for portrait -->
                <VisualState x:Name="FullScreenPortrait">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PortraitBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemGridView" Storyboard.TargetProperty="Padding">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="96,137,10,56"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!--
                    The back button and title have different styles when snapped, and the list representation is substituted
                    for the grid displayed in all other view states
                -->
                <VisualState x:Name="Snapped">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="pageTitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedPageHeaderTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="Visibility">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemGridView" Storyboard.TargetProperty="Visibility">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                        </ObjectAnimationUsingKeyFrames>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="groupGridView" Storyboard.TargetProperty="Visibility">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
    </Grid>
</common:LayoutAwarePage>
